Pbinting press



P. W. ALLEN PRINTING PRESS May 26, 1931.

Original Filed March 30, 1928 3 Sheets-Sheet l ATTO RN EY WITNESS:

P. W. ALLEN PRINTING PRESS May 26, 1931.

Original Filed March 30. 1928 3 Sheets-Sheet 2 INVENTQR Q BY 4%;

ATTORNEY Pqa/MY/iam filler? wrrmzss May 26, 1931. i P. w. ALLEN1,806,591

' PRINTING PRESS Original Filed March 30, 1928 3 Sheets-Sheet 3 INVENTORWITNESS=&& I ATTORNEY Patented May 2 6, 1931 UNITED STATES PATENT OFFICEPRINTING PRESS Application filed March 30, 1928, Serial No. 265,977.Renewed April 15, 1931.

This invention relates to a machine for making multiple copies as inprinting, the object being to produce a machine, which may beexchangeably employed in the production of multiple copies as inprinting by type-printing, stencil printing and lithographic printing.The invention is adapted to carry out any'of these processes byemployment of an interchangeable form, mountedon a reciprocablebed-plate by which the several forms carrying the matter to beillustrated may be rapidly and effectively copied.

In carrying out the invention I employ a reciprocable bed operated byhand or power,

in which the forms are properly locked in place and passed to and frounder a stationary weighted roller for effecting an impression and meansfor translating a sheet of paper automatically fed up to the roller andcarried in guides around its contour for delivery. The bed plate orplaten is reciprocated by a sprocket gear and chain, the latter carryinga lateral pin engaging a slotted upright post on the platen, and thevaried frame or chase carrying the matter to be printed is properly.secured on the platen or bed plate and passes under a plurality ofinking rolls to inkithe flat relief surface of the exchangeable formcarrying type or other printing surface to retain the ink. The pa per isfed over a thin slotted platform fixed above the plane of the inkingrolls, and maintained in position by a pair of tiltable translatingfingers to transfer it to the impression roll and the latter is mountedin a slotted frame automatically rocked to raise or lower by the"reciprocatory movement of the bed plate. The invention embodies meansfor effecting these results by the movement of the bed plate feeding thepaper and making an inked impression for any kind of printing surfacewhether lithographic stone, a zinc plate, a type surface or amimeographic surface. 7 1

The several features of novelty will be more fully hereinafter describedand will be definitely indicated in the claims appended to thespecification.

. In the accompanying drawings illustrating the invention Figure 1 isaside elevation of a press adapted to carry out the invention Figure 2is a plan of the Same;

Figure 3 is an end elevation;

Figure 4 is a side elevation;

Figure 5 is an isometric view of the bed plate; I

Figure 6 is a sectional detail of paper feed device taken on line 66 ofFigure 5. I Figure 7 is a form adapted for mimeograph work. V

V Figure 8 is a horizontal sectional view taken through the impressionroller.

Figure 9 is a fragmentary detail perspective view of the paper guidingmeans.

Referring more particularly to the drawings:1 represents the base of themachine and is provided with a plurality of rubber supports 2. 3represents a reciprocable bed plate movable to and fro on the supportingbase and guided by pairs of transverse rollers 24, driven by a sprocketchain 4, engaging a pairvof sprocket gears5-5a, actuated by a hand wheelor pulley for power. One of the links ofthe sprocket chain is providedwith a lateral pin 8 engaging the slot in a vertical post 9, Secured'tothe platen or bed plate. Laterally projecting from the sides of the bedplate at each end is a pair of'pins 1010a; which on their translativemovement engage the opposite side edges of a pair of pivoted slottedarms 11 housing a pair of journals 12, of a roller 22 to efiect animpression. The arms 11 and 11a are connected with links 13 and 13a andthe latter in turn are likewise joined at their op osite ends withtoggles 14. The toggles eing rockin ly mounted upon pivoted links 14:mounted or oscillating reciprocating movement through theinstrumentality of a floating fulcrum in the nature of transverse pins,such as indi cated at 15, projecting within the vertical slots 16disposed at appropriate points in the lengths of longitudinal bars 16The extremities of the latter mentioned bars are connected with terminalvertical posts 7 and 7a. Fixed plates 16 carried by the base 1 carrytrunnions 16 having eccentric pivotal connectionwith the links 14. Onthe rearward movement of the bed plate the post 7 is engaged and shiftsto the left, the bars 16 carrying slot 16 thus collapsing the togglesand allowing the impression roller 22 to drop in the slotted arms 11-1laand the pins 10 striking the arms tilting them to the left and causingroller to rise on the inclined frame and to: the raised dotted positionshown in F igure' l of the drawings to free the 'roller from theprinting surface. As bestflillustrated in Figures 1 and 4 of thedrawings, a sliding bearin support'42 is providedfor the journals 12 bymeans of which the-impression roller 22 supported thereby may be shiftedtoward and away-from the: inking rollers 23 and the paper respectivelyand locked inthedatter positiomas against vibratory motion 'created bythe springs 20by the links le located in thepaths vofmovement thereof.

A pair of pivoted barsi 18 mountedat' the rear of the machine permitsthe frame 19 carrying the roller 22 to shift vertically and maybeyieldingly-and accuratelyiadjusted by a set screw 19,? putting tensionon the' spring 20"conne'c'ted to the: roller frame. =The=set screws 21,restrict downward movement'of the frame 19 and' perm'it accurateregistryof the roll to eiit'ect.a: proper[impression .On alternate movements theengraved Or'IilllUS- trative surface :is' carried winder: a train ofinking rolls 28iin 'gear with thewoperating mechanism by 1 which: therolls :aie supplied with'ink for surfacing the particular form locked inth e "bed plateland guided in' a 1 true rectilinear motion by means ofthe symmetrical rollers 24 mounted" and: supported 'on thebaseofthepress. -At. one end of the machine is provided a thin: rigidplatformr25 sloted vat26on'whioh the :paper on which the impressionis-to be made is placedmnd'guided by a pairwof ifingers 29-:29a,'carryingt'flat rectangular edges '27 "engaged by springs. 28 which. areautomatically operatedhythemoringbed plate to? averticallposition as indicated in full lines inFigure 6, or in positionindicated I-in dottherein. On shifting of thebed plate to the printing position'thefingers eugagera fixed transverse bar 34 and are folded to ahorizontal position and on return move- :ment of the bed plateaslopingface 85 of the fingers comes into engagement with: the posts 7aand are shifted to vertical positions, thereby raising sax d lingers 111. a plane to engage the' next succecding'sheet-of paper and carryitforward thru the s'lots"26-I26a er the paper support. As it isshifted; forward the edge of the paper traverses an. inclined guide 25bywhich it is led beneath the roller "22-and'guided loya plurality ofroller guides 29, engaging the face of the ro'ller22 1 and deliveredt-o-a series of slats 3O 'moun'te'd on arms 31 carried by therollerframe-19,*at

the end'of the platen movement to 'theright it engages thegposts 7m andshiftsd'iiik 16 raising the toggle 'and'the pin 10a engages tbe.-1 oller22 and the succession of roller guides 29 rotating against the face ofthe roller '22. The printed sheets upon being shifted upwardly andoutwardly above the points of connection between the roller 22 and!theuuppemnostsof: the: roller, guides 29 has the unprinted side thereofmomentarily reposing against the-slats 30. =The 'roller 22 duringPTOQTESSiVG revolutions in l a counterclockwise direction causes theuppermost of the roller guides '29 to rotate inacountcrclockwise'di1'eCl310n"-Wl1(3 18l)y tl1e *lOWeI 6dg6S of the sheets v i'll beelevated anditheunprinted habits or 'faces' of the sheets will then skiddownwardly and outwardly upon the inclrined shelf 32 for subsequentdisposition and stacking within a fixed paper support 33a. The fingers29 a and 290; will anateri ally onset with the inclined. guides '25 andthe guide rollers '29 operating against't-he face orsurface of theroller 22 in the discharge of the sheets and in viowof the fact that theroller 22 engages thesheet in advance of the inclined guides 25, it'istobe note'd'that theroller effccts an'imp-ression on the paper against theink surface of the form. The reci-procable bed plateis provided with apair of set screws 36-36a for'lock'ingany'formof the printing chasecontaining type matter --for which may be held by a pair of projecting"plates 37- 3i'ra-over-lapping the form. In place of the printing chasemay be a frame38-supporting mimeo'gra-ph stencil or-a sheet of zinc 39locked bya pair of bails 40, covered by a layer of permeable material Mant! thus varied 'type' matter may beapplied to the bed plate anddilferent forms of printing reproduction may be enchangeably carried.out'in a single printing press.

' Having thus described my invention, what T'claim'is new and desire' tosecure by 'LettersPatent is:

I l. 'A printing press comprising a reciprocable bed, a slotted paperfeed platform over its rearward position an impression roller forward ofthe platform; foldablelin- 'gers carried by the bed to-engage the paperthrough the'slotted platform, means on the printing frame forautomatically raising the fingers upon rearward movement to lift andfeed the paper on the forward movementof the-bed, a traverse bar abovethebed to lower the fingers on forward movement of thebed, and means forshifting the impression rdller into and out .of printing position on theforward and back movement of the bed respectively.

2. A printing press having a reciprocable bed, a chain and sprocket ingear therewith to shift the same over ink rolls to ink the printingsurface, a vertically movable impression roller, a paper feed therefor,and posts on the bed for shifting the roller into printing position onforward movement of the bed, and lifting it out of printing position onbackward movement.

3. A printing press comprising a reciprocable bed, adapted to support arelief printing surface, means for feeding paper to the printingsurface, a pivoted frame carrying an impression roller at the forwardend of the bed, a toggle to raise and lower the roller, and meanscarried by the bed for operating the tog le to raise and lower theroller into and out of printing relation to the bed on forward andbackward movement.

4. A printing press comprising a reciprocable bed, a platform forfeeding paper, a vertic-ally movable impression roller, posts on the bedfor shifting the roller into and out of printing relation upon alternatemovement of the bed, guides delivering the paper as printed, arms forthe roller shifted by the bed to rock the impression roller.

5. A printing press comprising a reciprocable bed, a verticallyadjustable weight impression roller, a frame therefor, slotted armscarrying the roller, a collapsible toggle for raising and lowering theroller frame, and means for collapsing and setting the toggle by thereciprocating bed.

6. A printing press, drive means for reciprocating the bed therefor, avertically shiftable weighted impression roller, a pivoted frame for theroller, a toggle automatically collapsed and straightened by thereciprocating bed to shift the roller in or out of printing position,means for feeding a sheet of paper over the roller, and delivery armsupon the pivoted frame to transfer the printed paper to a receivingtable.

7. A printing press comprising a reciprocal bed plate, a pivoted framefor the press, an impression roller carried by the frame, slide membersfor the journal ends of the roller, means included upon the bed plate toraise and lower the roller and slides therefor incident to the reverseactions of the bed, and a locking mechanism having connection with theslide mountings to prevent displacement of the roller when the latter isshifted for operative use adjacent the bed.

